<template>
    <div class="user-info-head" @click="editCropper()"><img :src="options.img" title="点击上传头像" class="img-circle img-lg"/></div>
    <el-dialog :title="title" v-model="open" width="800px" append-to-body @opened="modalOpened" @close="closeDialog">
        <el-row>
            <el-col :xs="24" :md="12" :style="{height: '350px'}">
                <vue-cropper
                    ref="cropper"
                    :img="options.img"
                    :info="true"
                    :autoCrop="options.autoCrop"
                    :autoCropWidth="options.autoCropWidth"
                    :autoCropHeight="options.autoCropHeight"
                    :fixedBox="options.fixedBox"
                    @realTime="realTime"
                    v-if="visible"/>
            </el-col>
            <el-col :xs="24" :md="12" :style="{height: '350px'}">
                <div class="avatar-upload-preview">
                    <img :src="options.previews.url" :style="options.previews.img"/>
                </div>
            </el-col>
        </el-row>
        <br/>
        <el-row>
            <el-col :lg="2" :md="2">
                <el-upload action="#" :http-request="requestUpload" :show-file-list="false" :before-upload="beforeUpload">
                    <el-button>
                        选择
                        <el-icon class="el-icon--right">
                            <Upload/>
                        </el-icon>
                    </el-button>
                </el-upload>
            </el-col>
            <el-col :lg="{span: 1, offset: 2}" :md="2">
                <el-button icon="Plus" @click="changeScale(1)"></el-button>
            </el-col>
            <el-col :lg="{span: 1, offset: 1}" :md="2">
                <el-button icon="Minus" @click="changeScale(-1)"></el-button>
            </el-col>
            <el-col :lg="{span: 1, offset: 1}" :md="2">
                <el-button icon="RefreshLeft" @click="rotateLeft()"></el-button>
            </el-col>
            <el-col :lg="{span: 1, offset: 1}" :md="2">
                <el-button icon="RefreshRight" @click="rotateRight()"></el-button>
            </el-col>
            <el-col :lg="{span: 2, offset: 6}" :md="2">
                <el-button type="primary" @click="uploadImg()">提 交</el-button>
            </el-col>
        </el-row>
    </el-dialog>
</template>

<script setup>
import "vue-cropper/dist/index.css";
import {VueCropper} from "vue-cropper";
import {uploadAvatar} from "@/api/system/user";
import useUserStore from '@/store/modules/user'

const userStore = useUserStore()
const {proxy} = getCurrentInstance();

const open = ref(false);
const visible = ref(false);
const title = ref("修改头像");

//图片裁剪数据
const options = reactive({
    img: userStore.avatar, // 裁剪图片的地址
    autoCrop: true, // 是否默认生成截图框
    autoCropWidth: 200, // 默认生成截图框宽度
    autoCropHeight: 200, // 默认生成截图框高度
    fixedBox: true, // 固定截图框大小 不允许改变
    previews: {} //预览数据
});

/** 编辑头像 */
function editCropper() {
    open.value = true;
};

/** 打开弹出层结束时的回调 */
function modalOpened() {
    visible.value = true;
};

/** 覆盖默认上传行为 */
function requestUpload() {
};

/** 向左旋转 */
function rotateLeft() {
    proxy.$refs.cropper.rotateLeft();
};

/** 向右旋转 */
function rotateRight() {
    proxy.$refs.cropper.rotateRight();
};

/** 图片缩放 */
function changeScale(num) {
    num = num || 1;
    proxy.$refs.cropper.changeScale(num);
};

/** 上传预处理 */
function beforeUpload(file) {
    if (file.type.indexOf("image/") == -1) {
        proxy.$modal.msgError("文件格式错误，请上传图片类型,如：JPG，PNG后缀的文件。");
    } else {
        const reader = new FileReader();
        reader.readAsDataURL(file);
        reader.onload = () => {
            options.img = reader.result;
        };
    }
};

/** 上传图片 */
function uploadImg() {
    proxy.$refs.cropper.getCropBlob(data => {
        let formData = new FormData();
        formData.append("avatarfile", data);
        uploadAvatar(formData).then(response => {
            open.value = false;
            options.img = import.meta.env.VITE_APP_BASE_API + response.imgUrl;
            userStore.avatar = options.img;
            proxy.$modal.msgSuccess("修改成功");
            visible.value = false;
        });
    });
};

/** 实时预览 */
function realTime(data) {
    options.previews = data;
};

/** 关闭窗口 */
function closeDialog() {
    options.img = userStore.avatar;
    options.visible = false;
};
</script>

<style lang='scss' scoped>
.user-info-head {
    position: relative;
    display: inline-block;
    height: 120px;
}

.user-info-head:hover:after {
    content: "+";
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    color: #eee;
    background: rgba(0, 0, 0, 0.5);
    font-size: 24px;
    font-style: normal;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    cursor: pointer;
    line-height: 110px;
    border-radius: 50%;
}
</style>
